Latin name of the genus and species of the plant claimed: Fragaria ananassa.
Variety denomination: ‘PS-5298’.
BACKGROUND OF THE INVENTION The present invention relates to a new and distinct strawberry variety designated as ‘PS-5298’. This new variety is a result of a controlled cross made by the inventors, Stephen M. Ackerman, Steven D. Nelson, and Michael D. Nelson, in 1997 between strawberry variety ‘PS-592’ (patented, U.S. Plant Pat. No. 9,903) and strawberry variety designated ‘Aromas’ (patented, U.S. Plant Pat. No. 10,451). It is unknown as to which parent variety is the seed parent and which parent variety is the pollen parent. The variety is botanically known as Fragaria ananassa.
The seedling resulting from the aforementioned cross was asexually propagated by stolons in a nursery located in Siskiyou County, Calif., and was subsequently selected by the inventors from a controlled breeding plot in Salinas, Calif., in 1999. After its selection, the new variety was further asexually propagated by stolons in both Siskiyou County, Calif. and San Joaquin County, Calif. The new variety was extensively tested over the next several years in fruiting fields of Salinas, Calif. This propagation has demonstrated that the combination of traits disclosed herein as characterizing the new variety are fixed and remain true to type through successive generations of asexual reproduction.
BRIEF SUMMARY OF THE INVENTION ‘PS-5298’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary winter temperatures required for it to produce a strong vigorous plant and to remain in fruit production from April through November. The nearby Pacific Ocean provides the needed humidity and moderate temperatures to maintain fruit quality during the spring and summer production months.
The following traits have been repeatedly observed and are determined to be unique characteristics of ‘PS-5298’, which in combination distinguish this strawberry plant as a new and distinct variety:
-
- 1. Large plant size;
- 2. Medium to large fruit size;
- 3. Medium to red fruit color;
- 4. Spreading to reflexed calyx segments;
- 5. Medium to strong skin firmness;
- 6. Good fruit production with good flavor;
- 7. Medium green foliage with glossy texture and medium to strong interveinal blistering; and
- 8. Medium to large foliage, concave to flat in shape.
The strawberry varieties that are believed to be most closely related to the new strawberry variety ‘PS-5298’ are the parental strawberry variety ‘PS-592’ (patented, U.S. Plant Pat. No. 9,903) and the strawberry variety ‘PS-1150’ (patented, U.S. Pat. No. 10,780).
In comparison to the similar strawberry varieties ‘PS-592’ and ‘PS-1150’, the new strawberry variety ‘PS-5298’ differs by the following combination of characteristics as described in Table 1:
TABLE 1
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
1. Color of mature fruit Red Red to red Red
orange
2. Average fruit weight 23.5 23.1 17.6
(gm)
3. Marketable yield 1,362 1,392 1,010
(gm/plt)
4. Attitude of calyx Spreading Spreading to Spreading to
to reflexed reflexed collapsing
5. Firmness of skin Medium Medium Strong
to strong
6. Time of first harvest Early Early Late
7. Plant size Large Large Medium
8. Foliage color (upper Medium Medium green Medium green
side) green
9. Interveinal leaf Medium Medium to Weak to
blistering to strong strong medium
10. Foliage glossiness Medium Strong Weak
to strong
11. Foliage size Medium Large Small
to large
12. Fruiting truss Ranges from Ranges from Above
position relative to level with to level with to
foliage beneath beneath
In comparison to the parental strawberry variety ‘Aromas’, the new strawberry variety ‘PS-5298’ differs by the following combination of characteristics:
-
- 1. ‘PS-5298’ is partially remontant while ‘Aromas’ is day-neutral;
- 2. the shape of the foliage in cross section for ‘PS-5298’ is slightly concave to flat while ‘Aromas’ is mostly flat to convex;
- 3. the insertion of the achenes for ‘PS-5298’ is level with the surface of the fruit while ‘Aromas’ is below the surface of the fruit; and
- 4. the firmness of the fruit flesh for ‘PS-5298’ ranges from medium to firm while ‘Aromas’ is very firm.
For identification a series of AFLP molecular markers have been determined for this new variety.
BRIEF DESCRIPTIONS OF THE DRAWINGS The accompanying color photographs illustrate the overall appearance of typical specimens of the new strawberry variety ‘PS-5298’, at various stages of development as true as it is reasonably possible with color reproductions of this type. Color in the photographs may differ slightly from the color value cited in the botanical description which accurately describe the color of ‘PS-5298’. The depicted plant and plant parts of the new strawberry variety ‘PS-5298’ were taken in Salinas, Calif., and are approximately 8 to 9 months old.
FIG. 1 shows typical fruiting field characteristics taken in the month of June, 2006;
FIG. 2. shows a close-up view of typical leaf structure taken in the month of June, 2006;
FIG. 3 shows typical mature and immature field fruit taken in the month of June, 2006; and
FIG. 4 shows a close-up view of fruit taken in the month of July, 2006.
DETAILED BOTANICAL DESCRIPTION ‘PS-5298’ has not been observed under all possible environmental conditions. The characteristics of the new variety may vary in detail, depending upon variations in environmental factors, including weather (temperature, humidity and light intensity), day length, soil type and location.
The aforementioned photographs, together with the following description of the new variety ‘PS-5298’, unless otherwise noted, is based on observations taken during the 2006 growing season in Salinas, Calif. These measurements and ratings were taken from plants of ‘PS-5298’ dug from a high-elevation nursery located in Siskiyou County, Calif., during the middle of October 2005 and planted approximately 3 weeks later in Salinas, Calif. The approximate age of the observed plants is 7 to 10 months. Yield observations and fruit quality characteristics are averaged from four years of data collected from the 2003 through 2006 growing seasons. Flower measurements and characteristics are from secondary flowers unless otherwise noted. Fruit characteristics and measurements are from secondary fruit unless otherwise noted.
Color terminology where noted follows the Munsell Book of Colors, Munsell Color, Baltimore, Md. (1976).
The following Tables 2-8 describe fruit, plant, stolon, foliage, fruiting truss, flower and pest/disease characteristics of the new strawberry ‘PS-5298’ in comparison to the similar strawberry varieties ‘PS-592’ and ‘PS-1150’.
TABLE 2
FRUIT CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Color of mature fruit 7.5R 3/10 to 7.5R 3/12 to 7.5R 4/10 to
4/10 4/12 3/8
Red Red to orange Red
red
Color of internal flesh 7.5R 4/10 to 7.5R 5/10 to 7.5R 4/10 to
4/12 4/10 4/12
Medium red Light red Medium red
Length (cm) 4.9 4.8 4.2
Width (cm) 4.3 4.3 3.7
Ratio length/width 1.15 1.13 1.14
Slightly Slightly longer Slightly longer
longer than than broad than broad
broad
Calyx diameter (cm) 5.0 5.0 4.2
Average weight (gm) 23.5 23.1 17.6
Size Medium to Medium to Small
large large
Achene color 5Y 6/8 to 5Y 6/8 to 7.5R 5Y 6/8 to 7.5R
7.5R 3/8 3/8 3/8
Achenes per berry 285 304 293
Achene weight (mg) 0.64 0.61 0.56
Marketable yield (gm/plt) 1,362 1,392 1,010
Predominant shape Conical Conical Conical
Difference in shapes Moderate Moderate Slight
between primary and
secondary fruit
Band without achenes Absent or Absent or Absent or
very narrow very narrow very narrow
Unevenness of surface Weak Weak Absent or
very weak
Evenness of color Slightly Slightly uneven Even
uneven to to even
even
Glossiness Medium to Medium to Strong
strong strong
Insertion of achenes Level with Level with Level with
surface surface surface
Insertion of calyx Ranges from Ranges from Ranges from
level with to level with to level with to
above fruit above fruit above fruit
Attitude of the calyx Spreading to Spreading to Spreading to
reflexed reflexed collapsing
Size of calyx in relation Slightly Slightly larger Slightly larger
to fruit diameter larger
Adherence of calyx Strong Strong Strong
Firmness of skin Medium to Medium Strong
strong
Firmness of flesh Medium to Medium Medium to
firm firm
Distribution of red color Marginal and Marginal and Marginal and
of the flesh central central central
Hollow center expression Moderate Moderate to Moderate to
strong strong
Flavor Good Very good Fair
Soluble solids (% brix) 8.0 8.0 7.4
Time of first flowering Early Early Late
Time of first harvesting Early Early Late
Harvest period Late March Late March to Mid April to
to early early December early December
December
Type of bearing Partially Partially Partially
remontant remontant remontant
TABLE 3
PLANT CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Height (cm) 30.8 31.0 30.0
Spread (cm) 36.8 35.1 28.8
Crowns/plant 5.3 5.0 5.0
Size Large Large Medium
Habit Globose Globose Globose
Density Medium Medium to open Medium
Vigor Strong Strong Medium
TABLE 4
STOLON CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Average number per 1.1 1.2 0.8
plant fruiting field Few to Few to medium Few
medium
Anthocyanin coloration 7.5R 5/6 to 7.5R 5/6 to 5/4 7.5R 4/6 to 5/6
6/6
Anthocyanin intensity Weak Medium Medium to
strong
Diameter at bract (mm) 4.7 4.4 4.2
Thick Thick Medium
Pubescence Medium to Medium Medium to
strong strong
TABLE 5
FOLIAGE CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Foliage:
Color of upper 7.5GY 4/4 to 3/4 7.5GY 4/4 7.5GY 4/4
surface Medium Medium green to 3/4
green Medium green
Color of under side 5GY 5/4 to 6/4 5GY 5/4 to 6/4 5GY 5/4 to 6/4
Light grey green Light grey Light grey
green green
Petiole length (cm) 23.1 21.1 19.0
Petiole diameter 3.8 4.7 3.1
(mm)
Petiolule length 14.0 15.7 9.3
(mm)
Stipule length (mm) 20.7 20.8 14.5
Stipule width (mm) 8.3 8.5 8.4
Size bract leaflets Small Small to Small
medium
Shape in cross Slightly concave Slightly Slightly
section to flat concave concave to
slightly convex
Interveinal blistering Medium to strong Medium Weak to
to strong medium
Glossiness Medium to strong Strong Weak
Number of leaflets 3 3 3 to 4
Petiole pubescence Moderate Moderate to Moderate to
to sparse sparse sparse
Petiole attitude Strongly outward Strongly Strongly
of hairs outward outward
Stipule anthocyanin Weak Medium Absent or very
coloration weak
Stipule anthocyanin 10RP 4/10 to 4/12 10RP 4/8 10RP 5/6 to 5/8
color Red purple to 4/10 Red purple
Red purple
Petiole color 5GY 7/6 to 7/8 5GY 7/6 to 7/8 5GY 7/6 to 7/8
Medium yellow Medium yellow Medium yellow
green green green
Petiolule color 5GY 7/6 to 7/8 5GY 7/6 to 7/8 5GY 7/6 to 7/8
Light to medium Light to Light to
green medium green medium green
Stipule color 5GY 5/6 to 6/6 5GY 5/6 to 6/6 5GY 7/6 to 7/8
Light to medium Light to Light to
green medium green medium green
Bracht leaves color 7.5GY 4/4 to 3/4 7.5GY 4/4 7.5GY 4/4
to 3/4 to 3/4
Medium green Medium green Medium green
Terminal Leaflet:
Length (cm) 9.3 9.5 7.2
Width (cm) 7.6 8.0 6.4
Length/width ratio 1.22 1.19 1.13
Much longer than Much longer Longer than
broad than broad broad
Serrations/leaf 20.4 20.7 19.3
Size Medium to large Large Small
Shape of base Acute Acute Obtuse
Shape of teeth Obtuse Obtuse Obtuse
TABLE 6
FRUITING TRUSS CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Length (cm) 37.4 37.3 38.1
Position relative Ranges from Ranges from level Above the
to foliage level with to with to beneath foliage
beneath the the foliage
foliage
Pubescence Medium Medium Medium
Anthocyanin Light Light Moderate
intensity
Anthocyanin color 10RP 4/10 10RP 4/10 to 5/10 10RP 4/8 to 4/10
to 5/10 Red purple Red purple
Red purple
Attitude at first pick Prostrate Prostrate Prostrate
TABLE 7
FLOWER CHARACTERISTICS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Petal color N9.5/90.0%R N9.5/90.0%R to N9.5/90.0%R to
to N9.25/84.2%R N9.25/84.2%R
N9.25/84.2%R White White
White
Corolla diameter 32.3 30.6 30.5
(mm) Large Medium Medium
Calyx diameter 39.9 38.8 34.0
(mm)
Petal length (mm) 12.4 12.1 12.5
Petal width (mm) 12.6 11.5 10.8
Petal length/width 0.98 1.05 1.15
ratio
Petals/flower 5.9 6.0 6.2
Sepal length 16.0 15.7 13.1
(mm)
Sepal width (mm) 6.2 6.2 5.4
Sepal 2.57 2.54 2.42
length/width
ratio
Sepals/flower 11.8 11.9 12.4
Sepals color 5GY 4/6 5GY 4/6 to 5/6 5GY 4/6 to 5/6
to 5/6 Medium green Medium green
Medium
green
Size of calyx Larger Larger Larger
relative to corolla
Size of inner Ranges from Ranges from Ranges from
calyx relative same size to same size to same size to
to outer calyx smaller smaller smaller
Relative position Overlapping Overlapping Overlapping
of petals
TABLE 8
PEST AND DISEASE REACTIONS
‘PS-592’ ‘PS-1150’
(U.S. Plant (U.S. Plant
Pat. No. Pat. No.
Characteristic ‘PS-5298’ 9,903) 10,780)
Two spotted spider mite Moderately Moderately Moderately
susceptible susceptible susceptible
Lygus bug Susceptible Susceptible Susceptible
Flower thrips Moderately Moderately Moderately
susceptible susceptible susceptible
Powdery mildew Moderately Moderately Moderately
susceptible susceptible susceptible
Botrytis fruit rot Moderately Moderately Moderately
Susceptible susceptible susceptible
Angular leaf spot Moderately Moderately Moderately
susceptible susceptible susceptible
Virus complex Unknown Unknown Unknown
